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Normal-temperature-curable high-temperature-resistant conveyer belt adhesive and preparation and application method thereof

A room temperature curing and adhesive technology, applied in the direction of bonding method, adhesive type, chloroprene adhesive, etc., can solve the problem of joint strength only reaching 60-70%, short service time, and poor bonding strength Advanced problems, to achieve good benefits, short operating time, good flex resistance

Inactive Publication Date: 2011-08-17
郭国维
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cold bonding joints are mostly suitable for neoprene rubber, saving time and effort, simple operation, no heat source is required for bonding, and fewer tools are used on site, but due to the performance defects of traditional adhesives, the use time is relatively short, and the joint strength can only reach 60-70%, and it is almost difficult to use in high temperature occasions
Hot-bonded joints (thermal vulcanization) need to peel off the cloth and rubber layers of the joints of the conveyor belt into steps according to a certain form and angle, after grinding, cleaning, drying, and gluing, the joints are closed and clamped. Vulcanization under the conditions of time, pressure and temperature, this method has higher bonding strength, but it is labor-intensive and time-consuming, the operation is complicated, a heavy thermal vulcanization device needs to be moved, many tools are used on site, and degumming problems still exist at high temperatures

Method used

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  • Normal-temperature-curable high-temperature-resistant conveyer belt adhesive and preparation and application method thereof
  • Normal-temperature-curable high-temperature-resistant conveyer belt adhesive and preparation and application method thereof
  • Normal-temperature-curable high-temperature-resistant conveyer belt adhesive and preparation and application method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] At first, press chloroprene rubber 70, chlorinated rubber 30, zinc oxide 7, magnesium oxide 5, phenolic resin 20, coupling agent 5, the mass fraction ratio of mixed solvent (toluene, ethyl acetate) 400, these solvents, Put the solid materials into the reaction tank in turn, and stir for 2 hours at 40°C to prepare the adhesive component A;

[0024] Then, when in use, the prepared A component and the B component that is mainly 3,3'-dimethyl-triphenylmethane-4,4',6,6'-tetraisocyanate polymer are divided by 10: The ratio of 1 is mixed evenly, and the adhesive for high temperature resistant conveyor belt can be cured at room temperature;

[0025] Before use, the prepared conveyor belt joints must be polished, cleaned, and dried, and then coated with adhesive, the joints are bonded, and then rolled with a roller or hand hammer, beaten and compacted, cured at room temperature, and the conveyor belt is ready to use .

Embodiment 2

[0027] At first, by chloroprene rubber 70, chlorinated rubber 30, zinc oxide 7, magnesium oxide 5, epoxy ester 20, coupling agent 5, the mass fraction ratio of mixed solvent (toluene, ethyl acetate) 400, these solvents 1. Put the solid materials into the reaction tank in turn, and stir for 1.5 hours at 45°C to obtain the adhesive component A;

[0028] Then, when using the prepared A component and mainly 4,4'-dicarboxy-diphenylmethane-4,4',8,8'-hexaisocyanate polymer B component by 10:1 The proportion of mixing evenly, that is, room temperature curing high temperature resistant conveyor belt adhesive;

[0029] Before use, the prepared conveyor belt joints must be polished, cleaned, and dried, and then coated with adhesive, the joints are bonded, and then rolled with a roller or hand hammer, beaten and compacted, cured at room temperature, and the conveyor belt is ready to use .

Embodiment 3

[0031] At first, press chloroprene rubber 70, chlorinated rubber 30, zinc oxide 7, magnesium oxide 5, ethylene-vinyl acetate copolymer resin 20, coupling agent 5, the mass fraction ratio of mixed solvent (toluene, ethyl acetate) 400, Put these solvents and solid materials into the reaction tank in turn, and stir for 1 hour at 50°C to prepare the adhesive component A;

[0032] Then, when in use, the A component and the B component that is mainly 3,3'-diethyl-triphenylmethane-5,5',8,8'-heptaisocyanate polymer are mixed in a ratio of 10: The ratio of 1 is mixed evenly, and the adhesive for high temperature resistant conveyor belt can be cured at room temperature;

[0033] Before use, the prepared conveyor belt joints must be polished, cleaned, and dried, and then coated with adhesive, the joints are bonded, and then rolled with a roller or hand hammer, beaten and compacted, cured at room temperature, and the conveyor belt is ready to use .

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Abstract

The invention relates to a normal-temperature-curable high-temperature-resistant conveyer belt adhesive which comprises 80-95% of component A and 5-20% of component B, wherein the component A comprises 70 parts of chloroprene rubber, 30 parts of chlorinated rubber, 7 parts of zinc oxide, 5 parts of magnesium oxide, 20 parts of phenolic resin (epoxy ester or ethylene-vinyl acetate copolymer resin), 5 parts of coupling agent and 400 parts of mixed solvent (methyl benzene and ethyl acetate); and the component B mainly comprises polyisocyanate. The preparation method comprises the following steps: sequentially adding the solvent and solid materials of the component A into a reaction tank, and thoroughly and uniformly mixing to obtain the adhesive component A; and when in use, uniformly mixing the component A and the component B according to a ratio of 10:1. The conveyer belt adhesive has the characteristics of short normal-temperature curing time, high adhesive strength, good environmental resistance and excellent adhesivity and pliability, and is simple to use and operate, thereby having a wide application range.

Description

technical field [0001] The invention relates to a high-temperature-resistant conveyor belt adhesive capable of fast curing at normal temperature and a preparation and use method thereof, belonging to the field of viscose technology. Background technique [0002] An adhesive is a substance that uses surface suction to hold materials together. When an adhesive is applied to a substance, the adhesive should have sufficient fluidity and surface activity to wet the substrate, and must then be able to Hardened or set to produce high cohesive strength. The heat-resistant conveyor belt is generally made of multi-layer rubber polyester cotton cloth or polyester canvas covered with high-temperature resistant rubber, which is bonded by high-temperature vulcanization. It is mostly used to transport hot coke, cement, ore, slag, and heat Castings etc. Many existing adhesive compositions are adversely affected by high temperature ≥ 170°C, causing premature degradation of the adhesive and...

Claims

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Application Information

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IPC IPC(8): C09J111/00C09J115/02C09J161/06C09J5/00
Inventor 郭国维
Owner 郭国维
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